Crocus sativus is a triploid sterile plant characterized by its long red stigmas, which produce and store significant quantities of carotenoid derivatives. Saffron is widely used mainly as herbal medicine or food coloring, and as a flavoring agent. It is cultivated only in few countries around the world. Saffron selections of Kashmir showed heterogeneity for stigma length which may be due to the genetic and environmental factors. Identification of high yielding selections using the existing gene pool of saffron shows promise and potential for improving the productivity of this crop. Thirty one morphologically distinct saffron selections/clones were characterized for identification of variation in stigma characteristics and apocarotenoid content. Molecular characterization was done through SSR, ISSR and RAPD markers and comparative gene expression between diverse selections was done through semi-quantitative and quantitative PCR analysis. In present study heterogeneity among 31 saffron selections was observed with respect to stigma length. Apocarotenoid content was estimated through soxhlet extraction and was correlated with stigma length of saffron selections. Significant variation in stigma length (2.86-4.84 cm) and non-heritable change in stigma number was observed across thirty one selected saffron clones. HPLC analysis also revealed significant variation in crocin (40-45mg/g), safranal (0.17-0.28 mg/g) and picrocrocin content (0.87-1.27 mg/gm) contents between the clones. Stigma size viz-a-viz quality evaluation confirmed that saffron of Kashmir is of intrinsically high quality with respect to colouring, aroma and taste. Variability in stigma characteristics observed in saffron selections under study can thus be utilized for saffron crop improvement
